Influence of Diene Content on the Photodegradation of Ethylene-Propylene-Diene (EPDM) Elastomers
The photodegradation of EPDM based on dicyclopentadiene was followed by FTIR spectroscopy and the main photo-oxidation products were identified by derivatization reactions. It could be found that the photodegradation is initiated at the diene with formation of α,β–unsaturated carbonyl compounds and is then propagated to the ethylene-propylene segments. The propagation reactions are accelerated and, hence, the rate of photodegradation increases with the diene content.
Paula Maria Vilarinho
G. Botelho et al., "Influence of Diene Content on the Photodegradation of Ethylene-Propylene-Diene (EPDM) Elastomers", Materials Science Forum, Vols. 514-516, pp. 877-881, 2006